add tests for #203

src/test/scala/com/fasterxml/jackson/module/scala/deser/CaseClassDeserializerTest.scala

@@ -4,14 +4,16 @@ package deser
 
 import com.fasterxml.jackson.annotation.JsonProperty
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize
-import com.fasterxml.jackson.databind.{JsonMappingException, ObjectMapper, ObjectReader, PropertyNamingStrategy}
+import com.fasterxml.jackson.databind.{DeserializationFeature, JsonMappingException, ObjectMapper, ObjectReader, PropertyNamingStrategy}
 import com.fasterxml.jackson.module.scala.ser.{ClassWithOnlyUnitField, ClassWithUnitField}
 
 import java.time.LocalDateTime
 
 object CaseClassDeserializerTest {
   class Bean(var prop: String)
 
+  case class Time(hour: String, minute: String)
+
   case class ConstructorTestCaseClass(intValue: Int, stringValue: String)
 
   case class PropertiesTestCaseClass() {
@@ -163,6 +165,22 @@ class CaseClassDeserializerTest extends DeserializerTest {
     result.value should equal (Array[Byte](1,2,3))
   }
 
+  it should "support deserialization with missing field" in {
+    val input = """{"hour": "12345"}"""
+    val result = deserialize(input, classOf[Time])
+    // https://github.com/FasterXML/jackson-module-scala/issues/203
+    // this result is not popular with users it has been the behaviour for quite some time
+    result shouldEqual Time("12345", null)
+  }
+
+  it should "fail deserialization with missing field (DeserializationFeature.FAIL_ON_NULL_CREATOR_PROPERTIES)" in {
+    val mapper = newBuilder.enable(DeserializationFeature.FAIL_ON_NULL_CREATOR_PROPERTIES).build()
+    val input = """{"hour": "12345"}"""
+    intercept[com.fasterxml.jackson.databind.exc.MismatchedInputException] {
+      mapper.readValue(input, classOf[Time])
+    }
+  }
+
   it should "support ClassWithUnitField" in {
     val input = """{"intField":2}"""
     val result = deserialize(input, classOf[ClassWithUnitField])